Valve.



E. v. ANDERSON;

VALVE. APPLICATION FILED 1320. 2a, 1907.

I Patented Oct. 13,1908.

iiimiiiimiii inoreland and State of Pennsylvania, a citithe piston, underce'rtain conditions oi use as zenof the United States; have invented or hereinafterexplained. When such equalizadiscovered Ta certain new and useful,- Imtion occurs or is approxi1nated,thefiuid presrovement in Valves,lof whichin'iprovement sure on the underside of the valve 3 will the following is a specification. force-thevalve to andwhold itin open posi- 1 The invention described herein relates to tion, until there is-for anyreason such a re certain improvements in valve mechanism duction'of pressure below the piston that f controlling the flow offiuid as steam and the pressure above the piston will overcome water from a source under pressure, and has] the upwardpressure on the valve, thereby J for its objecta construction wherein the 1 causing closing of the valve. valve may be shifted to and held in open P Provision'is made for the manual closing position by the pressure-of the fluid, and will of the valve by means of a rod 12 having a also be automatically closed by the same fluid threaded portion engaging a'nut 13 heldby a pressure in case of a breakage, as of a" steam. yoke 14 formed on or secured to the" cap of pipe, which-would cause loss or injury; the cylinder, 6 This rod extends through a Theinvention is hereinafter more fully stufling bolt in. the cap and when the'valve is described and claimed' i to be closedmanually is moved down'against -Inthe accompanyingdrawing forming a the piston forcing the valve to its seat; It; :part' of. this specification Figure 1 is a view will be observed that the ends of ro'd fl and V showing in sectional elevation fa pilot and the stem 5a're so constructed that the passage non-return fvalve embodying my improvethrough the stem is closed when tie rod is ment Fig. 2 is a sectional elevation of the screwed down to seatt he valve I non-return.va1ve mechanism on a plane at The space between the piston and the head right angles to the plane of section of Fig. 9 is rovided with an. outlet port connected 1 Fig. 3 is asectionaljdetail view showing to a shell 15 of the pilot valve. Thelower. i certain modifications ofstructure; and Fig. 4: end of this case is closedbya suitable head i is a sectional detail view showin a cushion and the upper endisnorlnally closed bya to prevent a hammering of the va ve and pisvalve 16 to prevent the V escape ofdiuid? 1 v ton, when the former is closed byfluid presthrdugh the outlet port 117. The valve 16 is, sure. v y v y I I held normallyto its seat by fluid pressure on: In the practice of my improvement the the flexible diaphragm 18 to the underside qi valve case or shell 1' is constructed to be inof which the; va ve 16 is secured. The space serted in a line ofpipe in such manner that above the diaphragm'is connected by a pipe the fluid will flow therethrough in the direc- 191to the l'ne of pipe controlled by the nontion-indicated by the arrow (1; The shell is return valve at a point outside of said valve. x divided transversely by a diaphragm 2 hav- A spring 20 is arranged in the shell 15 and ing a port or opening which is controlled by bears at-itsjupper end against the valve 16,- a. valve Th's valve which is preferably preferablythrough the medium ofa plug 21. guided in its movements by pins4 arranged The tension of'this spring isregulatedby a around the port or opening through the screw, 22. In case of a breakage, of the line diaphra m 2, is provided with a hollow stem of pipe. controlled by the non-return valve, 5 extending into a cylinder 6 formed on the the pressure on the diaphragm will be re,- shell 1. on the discharge side of the diaduced and the valve 16 opened by the spring hragnn This stem is secured to a piston 7 i 20, thus permitting, such escape of fluid from in the cylinder provided with a loosely fitthe space between the vplston 7 and the head ting lining 8 having the inner cylinder head 9, that saldpiston Wlll be shifted forcing the 105 9 formed integral therewith, said parts bei valve/3 toits seat and preventing any further ing preferably formed of brass. This com- 1 flow offluid along the broken pipe line. v bined linin vand cylinder head is detachl 4 As, shown in Fig.- 2, the corner of the ably secured to a ledge 10 adjacent to the piston may be cut away, and an annular no ED STATES PATENT OFFICE. i

TUNIT lJIdVl/Ytltl V. ANDERSON, OF MON ESSEN, PENNSYLVANIZX.

VALVE;

lid- 901,222. r v Specification of Letters Patent. Patented Oct. 13 1908.- i

- A plicants filed December 23,1907. Serial No. 407,825. To whom it mg; concern: A g g I betwe'enthe latter and the inner head 2), as

Be it known th I,,EnwAno V. Ais'nnnso'x, 1 by a leakage port 11, so that there may be an residing at -Monesse'n,

lowerv end of the cylinder. u plate '23 of resilient material secured to the 'Provisionis made for aslow flow offluid ,piston from the space above the piston to the space 1 recess 24 in the piston. An

in the countyof Vest: equalization of pressure on opposite sides of infsuch manner as toextend over the butment 25 1S 'formed at o ueen d of the cylinder against which'the plate 23 will strike before the piston reaches the end of the cylinder, and

thereby form a resilient cushion or hearing for the piston. 'In order to prevent a violent seating of piston 1s formed wlthan anroove in the lower head of the cylinder before the piston reaches str'oke, as' shown in' Fig. 4. \Vhen' this projection enters the chamber is formed between theportions of -.the cylinder head and piston, .Within' the 1 'forslow' leakage between the the projection and groove.

. valve controlling jeetion, such chamber being closed except side walls of ,I claim herein as my invention:

1. In a valve mechanism, the combination of a casing having a passage therethrough, a valve controlling said passage, a cylinder, a piston arranged in said cylinder, a port or passage through the piston for conducting fluid under pressure'to'that side of the piston Where it will operate to shift the valve'to closed position. V

2. 'In. a valve mechanism, the combination of a casing having a passage therethrough, a said passage, a cylinder, :1 piston arranged in said cylinder, :1 port or passage for conducting fluid under pressure to that side of the piston Where it will operate to shift the valve to closed position, means for permitting the flow of fluid to the opposite side of the piston, and a normally closed groove aof a opening therethrough, a cy escape from the cylinder on the side of the piston opposite that on which fluid pressure is introduced. 3. In a. valve mechanism, the combination l of a casing having a passage therethrough, a valve seating against pressure and control-- ling the flow of fluid through such passage, :1 cylinder, a piston connected to the valve. a port or passage for side of the piston where it will operate to close the valve, a port" for the escape of fluid to the opposite side of the piston, an outlet on such side of the piston and. a valve normally closed by'flnid pressure controlling suclroutlet. 4

4i In a valve mechanism, the combination -casing having a -dia hragnrwith an inder having its axis in line with the center of the opening in the diaphragm a valve seating against pres- EDWARD v. ANDERSON. Witnesses:

'FRANCIS J. TOMASSON,

J. I-lmumu'r BRADLEY.

conducting fluid to the sure to close such opening and provided with a hollow stem for the passage otfluid into 

